Heavy-duty-belt adjuster



Nv. 16,1926. l 1,607,094

N. J. MCCAY f HEAVY DUTY BELT ADJUSTER Filed March 24. 1925 2 Sheets-Sheet 1 Illllllllllllll l.\

New-11u11 ...L MC. Egli Nov. 16,1926. 1,607,094 N. J. MccAY HEAVY DUTY BELT DJ'USTER Filed March 24 A1925 2 Sheets-Sheet 2 0 0 O *0 t 7, g J5-@ E ff 'J' 3] 16./ n@ l A1 f 6 //2 f3 l* /A i; //o /f/ v gin/vento@ v Patented Nov. 16, 1926'. 'i

NEWTON JASPER M 5oA-Y,f or ONYX; CALIFORNIA. 1

.,fHE'AVY-DUT'Y-BELTanatema.

Y Appiifeaiidn sie@ 'March 24, 1925;." serial No. iaoaa i This invention relates to improvementsin belt,adjustingmechanism.` x

The prima-ry Object of this invention .isthe provision of anA improved belt vadjusting mechanism which is `particularly yvell adapt-` edto/ be used in connection with :heavy duty belts, embodyinga very durable and eiiicient construction for bringing the ends'of anV endlessvbelt intov proximateV engagement so thattheymay be connected. .p .l

, A further object of this invention uis the provisionfof la novel type of heavy duty belt adjuster, the same being an improvement over my heavy duty belt'adjuster Aset forthv in my `Patent #1,414,428sgranted Yther objects and advantagesofthis invention Will'be apparent during'the course of the following detailed'ides'cription. Y

In the accompanyingdrawings, forming a ypart of this specification, and 'wherein' siml- `lar reference characters vdesignate corresponding parts throughout the several views, Figure 1 is a plan view ofthe improved i ',adju'ster. y l a V Figures 2 and 3 are cross sectional yviews taken substantially on their respective lines in Figure 1 of the drawings.n y l Figure t is asectional -viewtaken through a tool supported frame of the adjuster, Which has` been'more particularly described yin mypatent above referred to. "j Figure' is fafplan View,` of adjusteshovving-it after thesame'has been adjusted, 'tobring' the endsof aV belt` intox proximate engagement. .f

Figure' Vis'a seetiorial vieW ,taken substantially on the lineE -ofFigure l.

Figure '.7 is 1a side elevation ofthe improved adjuster as illustrated in Figure'. j

Figure 8 lis across sectional View v.taken substantiallyon the line 8-8of Figure 1. Y Y In'the'dravvngs, wherein similar reference, characters Y parts throughout. the several vievvs,theletfte'rfA may 'generally designate abeltof any i i approved charactenadapted for 'heavy duty,

- upon Avvhioh theimproyed adjuster B be j used for bringingthe endsofthe same` into adjuster B for operationupon thebeltA, as is set forth in my patent above r'eferredto;

The belt A is of leather, composition material,"or the like, and the-same may be used u for heavyV duty.; lThese belts vare sometimesA the improvedV designate Acorresponding very 4 large,I and incident to climatic` condi` tions, s'tretchingof thel saine, l'or'v forother Vrea'sons1t becomesr necessary tolshorten or lengthen ythe belt, andr this necessitates severing ofthe saine and bringing ofthe ends ofthe same into proximate connected en! gagement. To'manually do'this,`vvithoutthe aid of any tools,is practically impossible@ The lmjgirfovedl adjuster ,is used "for bringing the ends 10 Vandfll vofftheheav'y duty beltA intoy a proximate connecting en-y gagement.y It comprises the clampingde- `vices 1 2 and 13, adapted tovbe connectedfupon 'the' ends 10'and`11 of the belt A, .and includmg novel Voperating" means 15,-Whi'ch Y comprises the principalnovelty of this invention, 1n order to bringthe clampingpo'lftions "12 and 13 rtogether after V'the'yha've been attached respectively tothe VendsflO"'and 11 `of the belt'AQ Each of the clampsg12and 13 .comprisea lovver jaw/2O. and an upperA jaW`21,vvvh'ich are hingedly connected at adjacent ends'vby means of a-fhinge piece 23. j and Wing ynutY structures 24;v are `preferably Swivel "bolts soy provided atthe ends of ',eachgof Ytheclamps f 12 and 13, as a means of clainping'fthe 'jaws of saidzclamps Ainto proximate engagement` Vwith the belt ends therebetween. These bolts Vandwing nutV -structuresv preferably comprise bolts l25,'Which'are s'vvivelly 4connected tov brackets 26 ofthe bo-ttom piece 2Q said swivel bolts 25 being AadaptedIto. swing upwardly into end recesses"n in the "per Vpiece'21,` to receive lWing nuts 27 fabovethe 'y said y.upper vpiece 21, 'substantially as is illusy tratedin "thedrayvings, and as is specifically set yforth in' patent abovereferfrled'fjto.

The brackets 5 26 are cast'v steel, or any other ltype"4 of metal, and areA securely Vaiiixedfjin any approvedmannertothe bottom surfaces 5 Y at the ends'of the lower vpiece20 ofboththe clamps 12 and-13." y Referring to the` ojg'neratingnieansf15,` the same preferably ,comprises a pairpf vrelatively long'guide rods 3Q,.preferably carried `in a fxedrelatlon throughsuitable-openings a1 in Vthe stacker-.S 26 ,Ofi-he @lamp is.; Said l guide'rods 30 extending atlright anglesfto proximate connecting engagement. f `A. cut-v@V ter orothertoolC may be supported bythe..

thefclamp 13,'inparallel relation.l If'de-y sired, they vmay beV made slidable in .the

freeV ends thereof. lSyzrtidfgude rods extend therethrough, to receive the guide rods, so

that'upon adjustmentof the said bevel gears and 36 they will be fed longitudinally of said guide rods. n y

The bevel gears 35 and 36 arerotatably supported upon the guidev rods at the opposite side of thev clamp 12 from the clamp 13; with the teeth 'of said bevel gears conkverging toward the clamp 12J Said bevel gears 35 and 36are adapted for synchronous operation, and to this end a shaft V is rotatably supported by brackets Y41; said.

brackets41 being rigidly connected with the jaw 20 of the clamp 12, and at its ends preferably supportingbevel gears 44 and 45 in meshing-relation with the bevel gears 35 and 36 respectively. The bevel gears 35 and 44 are held in meshing relation, as are'also the bevel gearsv 36 .and 45, by means of right angled bracket extensions 48 connected with the bearing extensions 41 and receiving the bevel gear collars 37 in journaled engagement therein, substantially as is illustrated in Figures 1 and 5 of the drawings.

A crank member 50 is rotatably supported by means 'of a bracket 51, at an end of the lclamp V12, preferably upon the lowermost rjaw 20; said crank including a shaft portion 52 supported by the bracket 51 in alignment with the shaft'40 said shaft portion 52 hav- Aing a bevel gear 55 in meshing engagement Y with the bevel* gear 36, at the opposite side vof said bevel gear 36 from the meshing engagement therewith by the gear 45.

.Referring to the operationA of the improved adjuster B in order to draw thev endsV lO'and 11 of the belt A together, the clamps .'12 and 13 are attached to the sections 10 and' 11 as above mentioned, with the free ends of the belt'extending into the spacebetween said clamps.` The operating means 15 having, of course been assembled upon Ythe 4clampsv as' above mentioned, it is merely necessary to rotate they hand crank 50, and this 'causes the bevel gears 35 and 36 to feed 'longitudinally' on theJ screw threaded portions of the guide rod 30, for the purpose of 'and to the moving the-clamps 12' and 13 towards or away from each other. Incident to the angular arrangement of the bevel of the gears, *Y force with which the screw threads of the bevel g-ears35 and 36 engage the guide rods, it can readily be understood that a very durable arrangement has been provided, and one whichmay be easily oper- Y ated by the handle crank 50 in order to bring the ends of the belt together, notwithstanding the power necessary to bring the belt ends together. I amnaware that it is old to operate mechanisms by means of bevel gears, but in thepresent instance it is moved to adjustably position the bevel vgears similar to nuts upon'the screw threaded guide rods, and to transmit the forcel incident'to the operation directly 'upon the bevel gears, incident to the novel arrangement of theoperating mechanism.

The guide rods 30 and31 are not screw threaded. for their .entire length', but have smooth portions thereof adjacent the forward clamp 13, and upon these smooth portions the cutter tool or device is adapted to be mounted. vThis device C l preferably comprises a frame 60, including upper and lower jaws 61 and G2 respectively, which include clamping means 63 by means of which to clamp they, belt j, .A therebetween. The lower jaw 62 may include supportingclips or brackets 65 adapted to engage over the smooth portions of the guide rods 30 and 31 1n order to support the device C in the relation described. A cutter blade 68 may be reciprocably carried by a frame 69, rigid with the top jaw 61; this frame 69 being adjustable longitudinally of the tool C, tow. effect the belt cutting operation, in the manner set forth in my patent above referred to;

the'blade 68 also being adjustable into engagement with the screw 70. v k

' From the foregoing description of this invention it is apparent that a novel type of belt by means of a feed heavy duty belt adjuster has been'provided,

which includesnovel operating details to render the same more efficientV in operation. Various changes 1n the shape, size, and

arrangement of parts may be made tothe form of invention herein lshown'anddescribed, without departing from the spirit of this invention or the scope of the claims.

I claim: j j 1 1. In a belt adjuster of the class described a pair of clamp devices adapted to be attached to the opposite ends of la belt, a pair of spaced screw threaded rods connected with one of said clamp devices andextending towards the other clamp device, a 'bevel gear nut adjustable on each of the screw threaded rods at the opposite sides ofthe last mentioned clamp device from that clamp 'device to which the rods 'are attache-d,V y a shaft rotatably carried byand rearwardly 'ofI that clamp device whichis'adjacent said bevel gear nuts, and bevel gearscarrled by said' shaft between thev rods and in meshing engagement with the bevel gear nuts of said rods whereby to operate said bevel gear nuts in synchronous manner upon said rods.

2. In a belt adjuster apair of clamp devices adapted for attachment'to the opposite ends of abelt, each clamp device including anupper and a lower jaw, brackets on the lower jaw ofeach clamp device, a pair of spaced screw threaded relatively long rods `carried in fiXed relationby the brackets of the lower jaw of one of said clainp devices" and extending in slidable relation through the brackets on the lower jaw of the other clamp device, bevel gear nuts adjustably threaded on said screw threaded'rods at the opposite side of the last mentioned brackets froin that clamp device to which the rods are attached, aV shaft rotatably `carried bythe lower jaw of said clamp device adjacent said bevel gears, bevel gears carried by said shaft meshing with each of the bevel gear nuts of said rods, a crank rotatably supported by said clamp device adjacent one 4of said bevell gears, and a bevel gear carried by said crank meshing with the bevel gear nut of oneof said rods. v

3. In a belt adjuster the combination of a` pairrof clanip devices adapted to be attached to the vopposite ends of a belt, each ofthe clamp devices including an upper 'jaw and a lower jaw, a lpair of spaced screw threaded relatively long rods carried in fixedv relation at an end of each bythe lower aw of one of said clamp devices, the lower jaw of the other clanipdevice having apertured brackets thereon at the lower surface thereof thru which the screw threaded rods slidv ably extend, a bevel gear nut adjustably threaded on each of said screw threaded rods at the opposite sides of the brackets froin that clamp device to which thefrods are attached, a short shaft rotatablycarried by the lower jaw which has the brackets thereon rearwardly of the said lower jawv and at its ends terminating in spaced relation adjacent the nuts, bevel gears on the ends of said short rod and rearwardly of the clamp device vwhich has said brackets' thereon in meshing relation with the said bevel gear nuts at' the inner sides of the screw threaded rods whereby toconnect said bevel gear nuts for synchronous rotation, andineans for rotating said short shaft. Y

Li. In a belt adjuster the combination of a pair of clainp devices adapted to be atf tached to the opposite ends'of a belt, each'of the clamp devices including an upper jaw and a lower Jaw, a pair of spaced screw y threaded relatively long rods carried in fixed relation at an'end of each by the lower `jaw of one of said clanip devices, :the lower jaw of the other clamp device having apertiired brackets thereon at the lower surface l thereof thru which the screw threaded rods slidably extend, a bevel gear nutadjusta'bly threaded oneach of said screw threaded rodsjat the opposite sides of the brackets vfrein that elainp device to which; the rods are comprising a crankv shaft rotatably supe ported by the clampdevice which is adjacent v said bevel gears and atl the oute-r'side of one of said screw -threadedrrods, and a bevel gear connected with said crank shaft in meshing" relation `with the adjacent bevel gear nut and at the outer side `of the adjacent screw J rod.

threaded j f NEWTON JASPER MCCAY. 

